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Improving the Accuracy of Using Pyranometers to Measure the Clear Sky Global Solar Irradiance

Description: Pyranometer users have customarily applied one responsivity value when calculating the global solar irradiance. Usually, the responsivity value is reported by either the manufacturer or a calibration facility. Many pyranometer calibrations, made both at NREL and elsewhere, have shown that the responsivity of a pyranometer changes with the change in solar zenith and azimuth angles. Depending on how well the pyranometer sensor is radiometrically leveled, these changes can exceed +/-5% of the repo… more
Date: June 1, 1998
Creator: Reda, I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Sealed-Accelerator-Tube Neutron Generator for Boron Neutron Capture Therapy Application

Description: Radio-frequency (RF) driven ion sources are being developed in Lawrence Berkeley National Laboratory (LBNL) for sealed-accelerator-tube neutron generator applications. By using a 2.5-cm-diameter RF-driven multicusp source and a computer designed 100 keV accelerator column, peak extractable hydrogen current exceeding 1 A from a 3-mm-diameter aperture, together with H{sup +} yields over 94% have been achieved. These experimental findings together with recent moderator design will enable one to de… more
Date: June 1, 1998
Creator: Leung, K. N.; Leung, K. N.; Lee, Y.; Verbeke, J. M.; Vurjic, J.; Williams, M. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analysis and monitoring design for networks

Description: The idea of applying experimental design methodologies to develop monitoring systems for computer networks is relatively novel even though it was applied in other areas such as meteorology, seismology, and transportation. One objective of a monitoring system should always be to collect as little data as necessary to be able to monitor specific parameters of the system with respect to assigned targets and objectives. This implies a purposeful monitoring where each piece of data has a reason to b… more
Date: June 1, 1998
Creator: Fedorov, V.; Flanagan, D.; Rowan, T. & Batsell, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photovoltaics Promise...The Federal Role: National Center for Photovoltaics PV FAQs (Fact sheet)

Description: The ''photovoltaic promise'' is that this solar technology is good for our nation's energy supply, good for our environment, good for our economy, and good for our future. This FAQ sheet briefly discusses details in each of these four areas. It also explains the federal role in solar electricity, specifically, the U.S. Department of Energy's PV Program, whose twofold purpose is to accelerate the development of PV as a global energy option and to assure U.S. technology and global market leadersh… more
Date: June 1, 1998
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Demonstration and Field Test of airjacket technology

Description: There are approximately 600,000 paint spray workers in the United States applying paints and coatings with some type of sprayer. Approximately 5% of these spray workers are in the South Coast Air Quality Management District (SCAQMD). These spray workers apply paints or other coatings to products such as bridges, houses, automobiles, wood and metal furniture, and other consumer and industrial products. The materials being sprayed include exterior and interior paints, lacquers, primers, shellacs,… more
Date: June 1, 1998
Creator: Faulkner, D.; Fisk, W. J.; Gadgil, A. J. & Sullivan, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Quasifree (e,e'p) Reactions and Proton Propagation in Nuclei

Description: The (e,e'p) reaction was studies on targets of C, Fe, and Au at momentum transfers squared Q{sup 2} of 0.6, 1.3, 1.8 and 3.3 GeV{sup 2} in a region of kinematics dominated by quasifree electron-proton scattering. Missing energy and missing momentum distributions are reasonably well described by plane wave impulse approximation calculations with Q{sup 2} and A dependent corrections that measure the attenuation of the final state protons.
Date: June 1, 1998
Creator: Abbott, David; Ahmidouch, A.; Amatuni, Ts. A.; Armstrong, C.; Arrington, J.; Assamagan, J. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy Savings in Refrigerated Walk-In Boxes

Description: The purpose of this technical brief is to provide an overview of the results of an assessment of a technique for saving energy in refrigerated walk-in coolers, and to evaluate the potential for this technology in Federal facilities. The focus of this study was on a single manufacturer of the technology, Nevada Energy Control Systems, Inc. (Necsi); no other vendors for this technology could be found. Previous studies were inconclusive about the overall efficacy of this technique due to uncertain… more
Date: June 1, 1998
Creator: Webster, Tom
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Imaging of Lamb Waves in Plates for Quantitative Determination of Anisotropy using Photorefractive Dynamic Holography

Description: Anisotropic properties of sheet materials can be determined by measuring the propagation of Lamb waves in different directions. Electromagnetic acoustic transduction and laser ultrasonic methods provide noncontacting approaches that are often desired for application to industrial and processing environments. This paper describes a laser imaging approach utilizing the adaptive property of photorefractive materials to produce a real-time measurement of the antisymmetric Lamb wave mode in all dire… more
Date: June 1, 1998
Creator: Telschow, Kenneth Louis; Deason, Vance Albert; Schley, Robert Scott & Watson, Scott Marshall
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ecological Interactions Between Metals and Microbes That Impact Bioremediation

Description: Samples have been obtained from (a) soil highly contaminated with Cr (tannery site) and (b) soils contaminated with petroleum, Cr, and Pb (Seymour, IN). Microcosm experiments with the tannery site soil indicated that microbial biomass (assayed as phospholipid-phosphate) and activity (assayed as carbon dioxide evolution) were primarily determined by organic carbon availability, but not total Cr concentration. The toxicity of metals to the indigenous microbial populations of the Seymour soils was… more
Date: June 1, 1998
Creator: Konopka, Allan E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gulf Coast Geopressured-Geothermal Program Summary Report Compilation. Volume I, Executive Summary

Description: The significant accomplishments of this program included (1) identification of the geopressured-geothermal onshore fairways in Louisiana and Texas, (2) determination that high brine flow rates of 20,000--40,000 barrels a day can be obtained for long periods of time, (3) brine, after gas extraction can be successfully reinjected into shallow aquifers without affecting the surface waters or the fresh water aquifers, (4) no observable subsidence or microseismic activity was induced due to the subs… more
Date: June 1, 1998
Creator: Chacko, J. John; Maciasz, Gina & Harder, Brian J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dose refinement: ARAC's role

Description: The Atmospheric Release Advisory Capability (ARAC), located at the Lawrence Livermore National Laboratory, since the late 1970�s has been involved in assessing consequences from nuclear and other hazardous material releases into the atmosphere. ARAC�s primary role has been emergency response. However, after the emergency phase, there is still a significant role for dispersion modeling. This work usually involves refining the source term and, hence, the dose to the populations affected as additi… more
Date: June 1, 1998
Creator: Baskett, R L; Ellis, J S & Sullivan, T J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mitigation Options in Forestry, Land-Use, Change and Biomass Burning in Africa

Description: Mitigation options to reduce greenhouse gas emissions and sequester carbon in land use sectors are describe in some detail. The paper highlights those options in the forestry sector, which are more relevant to different parts of Africa. It briefly outlines a bottom-up methodological framework for comprehensively assessing mitigation options in land use sectors. This method emphasizes the application of end-use demand projections to construct a baseline and mitigation scenarios and explicitly ad… more
Date: June 1, 1998
Creator: Makundi, Willy R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Restructuring and renewable energy developments in California:using Elfin to simulate the future California power market

Description: We provide some basic background information on support for renewable in California on the expected operation of the power pool and bilateral markets, and on the three key policy types modeled here. We discuss the Elfin production cost and expansion planning model as well as key assumptions that we made to model the future California pool. We present results from the successful Elfin models runs. We discuss the implications of the study, as well as key areas for future research. Additional info… more
Date: June 1, 1998
Creator: Kirshner, Dan; Kito, Suzie; Marnay, Chris; Pickle, Steve; Schumacher, Katja; Sezgen,Osman et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NIF Title III engineering plan

Description: The purpose of this document is to define the work that must be accomplished by the NIF Project during Title III Engineering. This definition is intended to be sufficiently detailed to provide a framework for yearly planning, to clearly identify the specific deliverables so that the Project teams can focus on them, and to provide a common set of objectives and processes across the Project. This plan has been preceded by similar documents for Title I and Title II design and complements the Site … more
Date: June 1, 1998
Creator: Deis, G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Design and construction of deinococcus radiodurans for biodegradation of organic toxins at radioactive DOE waste sites. 1998 annual progress report

Description: 'A 1992 survey of DOE waste sites indicates that about 32% of soils and 45% of groundwaters at these sites contain radionuclides and metals plus an organic toxin class. The most commonly reported combinations of these hazardous compounds being radionuclides and metals (e.g., U, Pu, Cs, Pb, Cr, As) plus chlorinated hydrocarbons (e.g., trichloroethylene), fuel hydrocarbons (e.g., toluene), or polychlorinated biphenyls (e.g., Arochlor 1248). These wastes are some of the most hazardous pollutants a… more
Date: June 1, 1998
Creator: Daly, M. J.; Wackett, L. P. & Minton, K. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Using trees to remediate groundwaters contaminated with chlorinated hydrocarbons. 1998 annual progress report

Description: 'Industrial practices in the past have resulted in contamination of groundwater with chlorinated hydrocarbons (CHCs) at many DOE sites, such as Hanford and Savannah River. Such contamination is a major problem because existing groundwater remediation technologies are expensive and difficult. An inexpensive method for groundwater remediation is greatly needed. Trees could be used to remediate CHC polluted groundwater at minimal cost (phytoremediation). Before phytoremediation can be extensively … more
Date: June 1, 1998
Creator: Strand, S.E. & Gordon, M.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanisms, chemistry, and kinetics of anaerobic biodegradation of cis-dichloroethylene and vinyl chloride. 1998 annual progress report

Description: 'The objectives of this study are to: (1) determine the biochemical pathways for reductive dehalogenation of cis-1,2-dichloroethene (cDCE) and vinyl chloride (VC), including identification of the enzymes involved, (2) determine the chemical requirements, especially the type and quantity of electron donors needed by the microorganisms for reductive dehalogenation, and (3) evaluate the kinetics of the process with respect to the concentration of both the electron donors and the electron acceptors… more
Date: June 1, 1998
Creator: McCarty, P.L. & Spormann, A.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Containment of toxic metals and radionuclides in porous and fractured media: Optimizing biogeochemical reduction versus geochemical oxidation. 1998 annual progress report

Description: 'The purpose of this research is to provide an improved understanding and predictive capability of the mechanisms that allow metal-reducing bacteria to be effective in the bioremediation of subsurface environments contaminated with toxic metals and radionuclides. The study is motivated by the likelihood that subsurface microbial activity can effectively alter the redox state of toxic metals and radionuclides so that they are immobilized for long time periods. The objectives are to: (1) develop … more
Date: June 1, 1998
Creator: Jardine, P. M. & Brooks, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Manipulating subsurface colloids to enhance cleanups of DOE waste sites. 1998 annual progress report

Description: 'This project seeks to increase the effectiveness of pump and treat systems for removal of pollutants from sandy aquifers. Pollutants which sorb strongly to aquifer solids are not efficiently remediated using pump and treat technologies. However, if the sorbents most active in immobilizing pollutants (e.g., clays, humics, and iron oxides) were dispersed into colloidal size particles (colloid mobilization), these colloids and their associated pollutants might be pumped from aquifers. At a chromi… more
Date: June 1, 1998
Creator: Gschwend, P.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some issues on the RF system in the 3 GeV Fermilab pre-booster

Description: Some issues are presented on the rf system in the future Fermilab prebooster, which accelerates 4 bunches each containing 0.25 x 10{sub 14} protons from 1 to 3 GeV kinetic energy. The problem of beam loading is discussed. The proposal of having a non-tunable fixed-frequency rf system is investigated. Robinson's criteria for phase stability are checked and possible Robinson instability growth is computed.
Date: June 1, 1998
Creator: Ng, K. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimation of potential population level effects of contaminants on wildlife. 1998 annual progress report

Description: 'The objective of this project is to provide DOE with improved methods to assess risks from contaminants to wildlife populations. The current approach for wildlife risk assessment consists of comparison of contaminant exposure estimates for individual animals to literature-derived toxicity test endpoints. These test endpoints are assumed to estimate thresholds for population-level effects. For several reasons, uncertainties associated with this approach are considerable. First, because toxicity… more
Date: June 1, 1998
Creator: Sample, B. E.; Suter, G. W. II & Rose, K. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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